Summary: Designing ATM
Get an overview of designing ATM case study, covering key requirements, important classes, and design highlights.
Now that you’ve completed the ATM System case study, let’s take a moment to reflect on and consolidate what we’ve learned. We’ll revisit the key system requirements, identify the core classes along with their responsibilities and relationships, and highlight the major design principles applied. We’ll also examine how objects interact within the system and walk through the overall workflow to understand how the components come together to achieve the desired functionality.
Key requirements
The following are the primary functional and operational requirements for the ATM System:
Each user has a single bank account accessible via an ATM card.
Core ATM components include a card reader, a keypad, a screen, a printer, a cash dispenser, and a network interface.
ATM must authenticate users using a PIN before permitting transaction access.
Only authenticated users can perform transactions.
Users may have a current and/or savings account.
Supported operations: balance inquiry, cash withdrawal, and fund transfer.
After a transaction, users can choose to perform another or end the ...